25 citations · 36 across the 5 of their papers we have counts for
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Dai-Freed anomalies and level matching in heterotic asymmetric orbifolds
Peng Cheng, Hector Parra De Freitas
We study asymmetric orbifolds of the heterotic string from the perspective of worldsheet Dai-Freed anomalies. Focusing on cyclic symmetries that…
Symmetries and dualities in non-supersymmetric CHL strings
Bernardo Fraiman, Héctor Parra de Freitas
We chart the classical moduli space of heterotic strings with broken supersymmetry a la Scherk-Schwarz and gauge group rank reduced by 8 in eight dimensions. This space consists of…
Tadpoles and Gauge Symmetries
Andreas P. Braun, Bernardo Fraiman, Mariana Graña +2
The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading g…
New Supersymmetric String Theories from Discrete Theta Angles
Miguel Montero, Hector Parra de Freitas
We describe three previously unnoticed components of the moduli space of minimally supersymmetric string theories in , describing in some detail their spectrum and duality…
Unifying the 6D String Landscape
Bernardo Fraiman, Héctor Parra De Freitas
We propose an organizing principle for string theory moduli spaces in six dimensions with , based on a rank reduction map, into which all known constructions f…